Valve



O. GNTHER Aug. 18, 1925.

v1 LA Filed May 29. 4924 CLOSED OPEN R m m V W..

l ATTORNEYS Patented Aug. 18, 1925.

UNITED STATES oTToJGNTHEE, or ESSLINGEN, GERMANY.

VALVE.

Application :filed May 29,

To all whom t mayl concern:

Be it known that l., OTTO GNTHER, a citr zen of Germany, residing at Esslingen, Germany, have invented certain new and useful Improvements in Valves, ot' which the following is a specilication. y

lily invention relates to balanced valve bodies of shutoff valves and more especially oi locomotive regulators.

`lit is an object ot' my invention to provide a valve body of the kind described in which the :faces oi' the valve seat and valve body 'are in contact when the valve is closed or fully open and in intermediate positions of the valve body are locked only with a pressure substantially equal to the steam pressure. y

It is another object of my invention to provide means v)for taking steam from several points of the steam space at the same time so as to avoid surging and priming.

ln the drawings ai'hxed to this specification and forming part thereof a device embody ing my invention is illustrated diagrammatically by way of example.

In the drawings- Fig. 1 isa vertical section ot' my novel valve on line A-B ot' Fig. 3.

Fig. y2 is a similar section on line C-D of Fig. 3, both iigures showing the valve closed. Y

Fig. 3 is a section on line E-F of Fig. l, showing the valve open. y

Fig. et is a plan view ot the valve body.

Figsi and 6 are developed projections of section G-H-JmK-G in Figs. 3 and l in the open and closed positions of the valve, respectively. j

Fig. 7 is a part section of the valve body and dome showing a pressure relief valve.

The casing 2 of the valve is secured to the shell of a boiler a. by means of a iiange Jormed at the top of the casing which is held between a seat formed on the boiler shell y and a deine 3 by means well known in the art and therefore not described in detail.

The valve body 1 is adapted to be rotated on a seat at the top of itsrcasing 2 by means of the operating spindle 9 which projects at the bottom of the casing 2 and is provided with `the usual lever 9 for turning the spindle. Stops 2 formed on the casing 2 limit the stroke of the lever 9.

An auxiliary valve 1() is secured to the upper end of the spindle 9 and adapted to rotate on a face formed in a recess at the 1924. serial No. 716,545.

ltop oit the valve body 1. Above this auxiliary valve a catch lever 15 is fixed on the spindle 9 andadapted to cooperate with lugs 15 on the valve 1. Holes 11 and 12 are formed in the auxiliary valve 10 and the top wall of the valve body and adapted to register in certain relative positions of the valve body `and auxiliary valve.

The valve body 1 and the casing are sub divided into a plurality of compartments by partitions extending 'from the faces of the `casing and valve body. In the present case, the valveubody and the casing are subdivided each into four quadrant chambers- 6, and V13, 13 in the valve body and 5, 5 and 111-, 14E in the casing-by partitions 20, 30, 40 and 50 in the valve body and 21, 31, 41 and 51 in the casing. In the valve body the Asaid partitions extend from the valve face as far as the head of the valve body, while in the casing they extend from the valve seat to a horizontal web 2 formed in the casing. Ribs 22, 32, 42 and 52` in the valve body and 23, `33, l13, and 53 in the casing which do not extend as far as the partitions 20, 21 etc., aref equally spaced between Y said partitions and provided with ground faces like the partitions. The chambers 5, 5 in the casing are connected with the steam space of the boiler a and the chambers 14, 111 in the casing are connected with the inlet pipe. 1. Holes 7 in the Walls of the chambers 6, 6 o1 the valve body 1 connect the said chambers with the dome 8 when the valve isclosed. ln this position, as shown in Fig. l5, the chambers 5, "5 in the casing register with the chambers 6, 6 in the valve body so that steam Hows from the chambers 5, 5 to the chambers 6, 6 and into the dome 8 through the holes 7.

To open the valve the spindle 9 is rotated until the holes 11 in the auxiliary valve 1() register with the holes 12 in the valve body. The valve body remains stationary.` The holes 12 in the valve body are connected with each of the chambers 6, 6 and 13, 13 so that steam 'flows Jfrom the chambers 5, 5 and 6, 6 into the dome 8 and romthedome to the chambers 13, 13 and the pipe 4. This balances the pressures on the outside and inside of the valve body 1, the pressure diilerence on its inside and outside being reduced approximately in proportion to the ratio of the areas of the holes 7 and the holes 11, 12.

On further rotation vof the spindle 9 the 7. A shut off valve comprising a valve seat having an annular row of alternately disposed inlet and outlet ports each having a valve seat portion dividing the port into two parts, a .rotary valve body having series of U-shaped passages terminating in ports in the surface thereof adapted to en gage with said valve seat, whereby said valve when in open position connects one part oteaoh inlet port with one part of an adjacent outlet port, and when in closed position connects one partei' eaeh inlet and exhaust port with the other part of the saine port.

8. A shut off valve comprising a, valve seat having an annular row of alternately disposed inlet and outlet ports each having a valve seat portion dividing the port into two parts, a rotary valve body having a series of U-shaped passages terminating in ports in the surface thereof adapted to engage with said valve seat, whereby said 'valve when in open position connects one part of each inlet port with one part of an adjacent outlet port, and when in closed position connects one part ot each inlet and eX- haust port with the other part of the saine port, and a dome covering said valve, said valve having an opening therethrough from one of said U-shaped passages to the interior ot the dome. l

9. A shut oli' valve comprising a valve seat having an annular row ot alternately disposed inlet and outlet ports each having a. valve seat portion dividing the port into two parts, a rotary valve body having series of U-shaped passages terminating in portsin the surface thereof adapted to engage with said valve seat, whereby said valve when in open position connects one part of each inlet port with one part of an adjacent outlet port, and when in closed position connects one part of each inlet and exhaust port with the other part ofthe sanne port, a deine covering said valve, said valve having an opening therethrough from one ot' said U-shaped passages to the interior o' the dome, and avalve-oontrolled opening between anotherI of said U-shaped passages and the interior of the dome.

In testimony whereof I aiilix my signature.

orro GNTHER. 

